import Data.List
import Data.Function
+import Data.Maybe (isJust, fromJust, fromMaybe)
import Monad
import System
import System.IO
import qualified Ganeti.HTools.Container as Container
import qualified Ganeti.HTools.Cluster as Cluster
-import qualified Ganeti.HTools.Version as Version
+import qualified Ganeti.HTools.Node as Node
+import qualified Ganeti.HTools.CLI as CLI
import Ganeti.HTools.Rapi
import Ganeti.HTools.Utils
-- | Command line options structure.
data Options = Options
- { optShowNodes :: Bool -- ^ Whether to show node status
- , optShowCmds :: Bool -- ^ Whether to show the command list
- , optOneline :: Bool -- ^ Switch output to a single line
- , optNodef :: FilePath -- ^ Path to the nodes file
- , optInstf :: FilePath -- ^ Path to the instances file
- , optMaxLength :: Int -- ^ Stop after this many steps
- , optMaster :: String -- ^ Collect data from RAPI
- , optVerbose :: Int -- ^ Verbosity level
- , optShowVer :: Bool -- ^ Just show the program version
+ { optShowNodes :: Bool -- ^ Whether to show node status
+ , optShowCmds :: Maybe FilePath -- ^ Whether to show the command list
+ , optOneline :: Bool -- ^ Switch output to a single line
+ , optNodef :: FilePath -- ^ Path to the nodes file
+ , optNodeSet :: Bool -- ^ The nodes have been set by options
+ , optInstf :: FilePath -- ^ Path to the instances file
+ , optInstSet :: Bool -- ^ The insts have been set by options
+ , optMaxLength :: Int -- ^ Stop after this many steps
+ , optMaster :: String -- ^ Collect data from RAPI
+ , optVerbose :: Int -- ^ Verbosity level
+ , optOffline :: [String] -- ^ Names of offline nodes
+ , optShowVer :: Bool -- ^ Just show the program version
+ , optShowHelp :: Bool -- ^ Just show the help
} deriving Show
-- | Default values for the command line options.
defaultOptions :: Options
defaultOptions = Options
{ optShowNodes = False
- , optShowCmds = False
+ , optShowCmds = Nothing
, optOneline = False
, optNodef = "nodes"
+ , optNodeSet = False
, optInstf = "instances"
+ , optInstSet = False
, optMaxLength = -1
, optMaster = ""
, optVerbose = 0
+ , optOffline = []
, optShowVer = False
+ , optShowHelp = False
}
-- | Options list and functions
(NoArg (\ opts -> opts { optShowNodes = True }))
"print the final node list"
, Option ['C'] ["print-commands"]
- (NoArg (\ opts -> opts { optShowCmds = True }))
- "print the ganeti command list for reaching the solution"
+ (OptArg ((\ f opts -> opts { optShowCmds = Just f }) . fromMaybe "-")
+ "FILE")
+ "print the ganeti command list for reaching the solution,\
+ \if an argument is passed then write the commands to a file named\
+ \ as such"
, Option ['o'] ["oneline"]
(NoArg (\ opts -> opts { optOneline = True }))
"print the ganeti command list for reaching the solution"
, Option ['n'] ["nodes"]
- (ReqArg (\ f opts -> opts { optNodef = f }) "FILE")
+ (ReqArg (\ f opts -> opts { optNodef = f, optNodeSet = True }) "FILE")
"the node list FILE"
, Option ['i'] ["instances"]
- (ReqArg (\ f opts -> opts { optInstf = f }) "FILE")
+ (ReqArg (\ f opts -> opts { optInstf = f, optInstSet = True }) "FILE")
"the instance list FILE"
, Option ['m'] ["master"]
(ReqArg (\ m opts -> opts { optMaster = m }) "ADDRESS")
"cap the solution at this many moves (useful for very unbalanced \
\clusters)"
, Option ['v'] ["verbose"]
- (NoArg (\ opts -> let nv = (optVerbose opts)
- in opts { optVerbose = nv + 1 }))
+ (NoArg (\ opts -> opts { optVerbose = (optVerbose opts) + 1 }))
"increase the verbosity level"
+ , Option ['O'] ["offline"]
+ (ReqArg (\ n opts -> opts { optOffline = n:optOffline opts }) "NODE")
+ " set node as offline"
, Option ['V'] ["version"]
(NoArg (\ opts -> opts { optShowVer = True}))
"show the version of the program"
+ , Option ['h'] ["help"]
+ (NoArg (\ opts -> opts { optShowHelp = True}))
+ "show help"
]
--- | Command line parser, using the 'options' structure.
-parseOpts :: [String] -> IO (Options, [String])
-parseOpts argv =
- case getOpt Permute options argv of
- (o,n,[] ) ->
- return (foldl (flip id) defaultOptions o, n)
- (_,_,errs) ->
- ioError (userError (concat errs ++ usageInfo header options))
- where header = printf "hbal %s\nUsage: hbal [OPTION...]"
- Version.version
-
{- | Start computing the solution at the given depth and recurse until
we find a valid solution or we exceed the maximum depth.
-}
iterateDepth :: Cluster.Table -- ^ The starting table
-> Int -- ^ Remaining length
- -> [(Int, String)] -- ^ Node idx to name list
- -> [(Int, String)] -- ^ Inst idx to name list
+ -> Cluster.NameList -- ^ Node idx to name list
+ -> Cluster.NameList -- ^ Inst idx to name list
-> Int -- ^ Max node name len
-> Int -- ^ Max instance name len
-> [[String]] -- ^ Current command list
iterateDepth ini_tbl max_rounds ktn kti nmlen imlen cmd_strs oneline =
let Cluster.Table ini_nl ini_il ini_cv ini_plc = ini_tbl
all_inst = Container.elems ini_il
- node_idx = Container.keys ini_nl
+ node_idx = map Node.idx . filter (not . Node.offline) $
+ Container.elems ini_nl
fin_tbl = Cluster.checkMove node_idx ini_tbl all_inst
(Cluster.Table _ _ fin_cv fin_plc) = fin_tbl
ini_plc_len = length ini_plc
main :: IO ()
main = do
cmd_args <- System.getArgs
- (opts, _) <- parseOpts cmd_args
+ (opts, args) <- CLI.parseOpts cmd_args "hbal" options
+ defaultOptions optShowHelp
+
+ unless (null args) $ do
+ hPutStrLn stderr "Error: this program doesn't take any arguments."
+ exitWith $ ExitFailure 1
when (optShowVer opts) $ do
- putStr $ showVersion "hbal"
+ putStr $ CLI.showVersion "hbal"
exitWith ExitSuccess
- let oneline = optOneline opts
+ (env_node, env_inst) <- CLI.parseEnv ()
+ let nodef = if optNodeSet opts then optNodef opts
+ else env_node
+ instf = if optInstSet opts then optInstf opts
+ else env_inst
+ oneline = optOneline opts
verbose = optVerbose opts
(node_data, inst_data) =
case optMaster opts of
- "" -> (readFile $ optNodef opts,
- readFile $ optInstf opts)
+ "" -> (readFile nodef,
+ readFile instf)
host -> (readData getNodes host,
readData getInstances host)
- (nl, il, csf, ktn, kti) <- liftM2 Cluster.loadData node_data inst_data
+ (loaded_nl, il, csf, ktn, kti) <- liftM2 Cluster.loadData node_data inst_data
+ let (fix_msgs, fixed_nl) = Cluster.checkData loaded_nl il ktn kti
+
+ unless (null fix_msgs) $ do
+ putStrLn "Warning: cluster has inconsistent data:"
+ putStrLn . unlines . map (\s -> printf " - %s" s) $ fix_msgs
+
+ let offline_names = optOffline opts
+ all_names = snd . unzip $ ktn
+ offline_wrong = filter (\n -> not $ elem n all_names) offline_names
+ offline_indices = fst . unzip .
+ filter (\(_, n) -> elem n offline_names) $ ktn
+
+ when (length offline_wrong > 0) $ do
+ printf "Wrong node name(s) set as offline: %s\n"
+ (commaJoin offline_wrong)
+ exitWith $ ExitFailure 1
+
+ let nl = Container.map (\n -> if elem (Node.idx n) offline_indices
+ then Node.setOffline n True
+ else n) fixed_nl
unless oneline $ printf "Loaded %d nodes, %d instances\n"
(Container.size nl)
unless (oneline || verbose == 0) $
printf "Solution length=%d\n" (length ord_plc)
- when (optShowCmds opts) $
+ let cmd_data = Cluster.formatCmds . reverse $ cmd_strs
+
+ when (isJust $ optShowCmds opts) $
do
+ let out_path = fromJust $ optShowCmds opts
putStrLn ""
- putStrLn "Commands to run to reach the above solution:"
- putStr . Cluster.formatCmds . reverse $ cmd_strs
+ (if out_path == "-" then
+ printf "Commands to run to reach the above solution:\n%s"
+ (unlines . map (" " ++) .
+ filter (/= "check") .
+ lines $ cmd_data)
+ else do
+ writeFile out_path (CLI.shTemplate ++ cmd_data)
+ printf "The commands have been written to file '%s'\n" out_path)
+
when (optShowNodes opts) $
do
let (orig_mem, orig_disk) = Cluster.totalResources nl
projects / ganeti-local / blobdiff